The First Trailer for Conor McGregor's "Notorious" Documentary Is Absolutely Wild

Gennady Golovkin Photos - Gennady Golovkin punches David Lemieux during their WBA/WBC interim/IBF middleweight title unification bout at Madison Square Garden on October 2015 in New York City. - Gennady Golovkin v David Lemieux

Plank exercises benefits are many. The plank is one of the best overall core conditioners around, and unlike crunches, it keeps your spine protected in a neutral position. Here are 3 ab workouts to strengthen core and lose excess belly fat.